Standard single-stage portable air conditioners run at full power, shut off, and start again all afternoon. The Keystone 14,000 BTU Inverter Portable Air Conditioner w/Remote raises and lowers its compressor speed to hold the temperature you set, so your room stays steadier and you use less energy. The line comes in Cooling Only and With Heat configurations. You can roll this Keystone air conditioner into a bedroom one week and a home office the next. Wherever it goes, you vent the single hose through a hanging or sliding window using the included kit. Upkeep is light, too. Rinse the washable filter about every 2 weeks and connect the included drain hose when humidity runs high. Key Features and Benefits of the Keystone 14,000 BTU Inverter Portable Air Conditioner w/Remote Inverter Efficiency: A variable-speed inverter and a 14.2 CEER rating match cooling to demand, for an estimated annual energy cost of about $65 in most homes. Cooling Capacity: It is rated at 14,000 BTU (ASHRAE) and 12,000 BTU (DOE SACC), giving you enough cooling for bedrooms and offices up to 550 square feet. Measured Noise: Indoor sound ranges from 42.5 to 53.5 dB and peaks at 56.5 dB, close to the normal background noise of an occupied room. Dry Mode: It removes up to 5.22 pints of moisture per hour and puts dehumidifying first, so you can clear sticky air on muggy days. Multiple Controls: Electronic push buttons, an onboard display, and the included remote let you set 60 to 86 degrees F or switch to Fan-Only mode from your chair. Sleep and Timer: Sleep mode raises the set point 2 degrees F every 30 minutes for 1 hour, and the 24-hour timer delays startup until you need cooling. Auto Modes: Auto mode adjusts cooling and all 3 fan speeds to your set point. Auto-swing louvers spread air in a wide arc, and Auto-Restart resumes operation after outages. Window Kit: The included kit fits hanging windows 19.1 to 63.8 inches wide or sliding windows 26.8 to 49.0 inches tall, using a 6-inch-diameter, 5-foot hose. Condensate Handling: Partial self-evaporation reduces how much water collects, and a full-bucket indicator with auto shutoff prevents overflow. With no internal pump, run the included drain hose downward. Operating Range: It runs on R-32 refrigerant in room temperatures from 55 to 95 degrees F, which covers warm spring days through peak summer heat. Power and Safety: This UL-certified model runs on 110-120 volts and draws up to 1,200 watts and 11.9 amps, so a standard 15-amp household circuit can power it. Rolling Portability: Casters and a 5.5-foot cord make it easy to reposition the 19.5 x 16.7 x 32.5-Inches (L x W x H) cabinet beside a desk or bed. Cooling Only vs. With Heat: Choose Your Configuration You can choose this Keystone portable air conditioner in a Cooling Only or With Heat configuration, depending on whether you want it for summer only or for more months of the year. Cooling Only: Model ke15337 handles cooling and dehumidifying with no heating mode and weighs 77.1 pounds, which suits you if you only need relief in warm months. With Heat: Model ke15338 includes a 12,000 BTU supplemental heater for chilly spring and fall mornings and weighs 72.75 pounds. Note: Heating mode requires a specific exhaust venting setup, so check your owner's manual before you run the With Heat model as a heater. Sylvane's Expert Take If you're cooling a bedroom or home office where the AC runs for hours at a time, the inverter saves the most energy during that steady operation. Measure your window before you order, because sliding windows must be at least 26.8 inches tall. Pick the With Heat model if your room turns cold in spring and fall; otherwise, Cooling Only keeps things simple. Both versions give you the same low 42.5 dB starting point, so either one is easy to sleep next to.